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Subject[PATCH v5 11/11] arm64: tegra: set hot trips for Tegra210
Date
Enable throttle function for SOC_THERM.
Set "hot" trips for cpu and gpu thermal zones, which
can trigger the SOC_THERM hardware throttle.

Signed-off-by: Wei Ni <wni@nvidia.com>
---
arch/arm64/boot/dts/nvidia/tegra210.dtsi | 41 +++++++++++++++++++++++++-------
1 file changed, 32 insertions(+), 9 deletions(-)

diff --git a/arch/arm64/boot/dts/nvidia/tegra210.dtsi b/arch/arm64/boot/dts/nvidia/tegra210.dtsi
index e55589c8a561..1bcd424d9da9 100644
--- a/arch/arm64/boot/dts/nvidia/tegra210.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra210.dtsi
@@ -808,7 +808,9 @@

soctherm: thermal-sensor@700e2000 {
compatible = "nvidia,tegra210-soctherm";
- reg = <0x0 0x700e2000 0x0 0x1000>;
+ reg = <0x0 0x700e2000 0x0 0x600 /* SOC_THERM reg_base */
+ 0x0 0x60006000 0x0 0x400>; /* CAR reg_base */
+ reg-names = "soctherm-reg", "car-reg";
interrupts = <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&tegra_car TEGRA210_CLK_TSENSOR>,
<&tegra_car TEGRA210_CLK_SOC_THERM>;
@@ -816,6 +818,15 @@
resets = <&tegra_car 78>;
reset-names = "soctherm";
#thermal-sensor-cells = <1>;
+
+ throttle-cfgs {
+ throttle_heavy: heavy {
+ nvidia,priority = <100>;
+ nvidia,cpu-throt-percent = <85>;
+
+ #cooling-cells = <2>;
+ };
+ };
};

thermal-zones {
@@ -832,13 +843,19 @@
hysteresis = <0>;
type = "critical";
};
+
+ cpu_throttle_trip: throttle-trip {
+ temperature = <98500>;
+ hysteresis = <1000>;
+ type = "hot";
+ };
};

cooling-maps {
- /*
- * There are currently no cooling maps,
- * because there are no cooling devices.
- */
+ map0 {
+ trip = <&cpu_throttle_trip>;
+ cooling-device = <&throttle_heavy 1 1>;
+ };
};
};
mem {
@@ -876,13 +893,19 @@
hysteresis = <0>;
type = "critical";
};
+
+ gpu_throttle_trip: throttle-trip {
+ temperature = <100000>;
+ hysteresis = <1000>;
+ type = "hot";
+ };
};

cooling-maps {
- /*
- * There are currently no cooling maps,
- * because there are no cooling devices.
- */
+ map0 {
+ trip = <&gpu_throttle_trip>;
+ cooling-device = <&throttle_heavy 1 1>;
+ };
};
};
pllx {
--
1.9.1
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